RC/500 load moment indicator
System Profile
RC/500 load moment indicator can be applicable to both level-jib tower crane and luffing tower crane. One unit includes the following components: LCD monitor, control cabinet, sensors, control output cable, wireless communication module and so on. According to the information of site, tower crane and its working condition, the controller can surveillance and prevent any collision between tower cranes, the hook going into the prohibited area. Each set on tower crane could real time feed back the actual load and prevent the maneuver of over loading
1 Main Functions
Measurement. Real time measure the slewing angle of main jib, radius of trolley (angle of jib and radius of tip for luffing tower crane), load and so on.
Indication. Real time indicates the slewing angle of main jib, radius of trolley (angle of jib and radius of tip for luffing tower crane), load, rated load at present radius, percentage of actual load to rated load and so on.
Alarm. Visual-audible pre-alarm( discontinuous buzzer and yellow column on monitor) when the load or radius reach pre set pre-alarm point(95%); Visual-audible alarm(continuous buzzer and red column on monitor) when the load or radius reach pre set alarm point(105%); when one set in the network go wrong, the alarm light at top of cabin(option) will give alarm.

Moment Protection. According to the load information, allow or prohibit the hook upwards or trolley forwards. Include 3 contacts: hook upwards, trolley forwards(high speed, low speed).
Zone Protection. According to the real time positions of tower cranes, allow or prohibit the movement of trolley and slewing. Include 7 contacts: 4 contacts for trolley(high speed forwards, low speed forward, high speed back wards, low speed back wards); 3contacts for slewing( left low speed,  right low speed, braking).
Data Set and Wirelessly Upload. All the data about site, tower crane and zone could be set on the computer in the office and wirelessly upload them to each controller on the tower crane,
Sensors Calibration. Calibration and measurement could be achieved by several simple operation after installation.
Records of controlling. All the records of controlling can be stored in the controller, which can be downloaded to surveillance computer for checking.
Updating of load chart of tower crane. Common load chart of tower crane have been stored in the controller and it could be updated by customer himself( this one will be realized in latest edition. The customer is required to install and operate Microsoft Access)
Authorization of Operation( will be realized in latest edition). In case of unauthorized operation, an authorized password is required for data setting and operation.